. The decay of timber and methods of preventing it . ted on an aver-age twenty years, and probably more, as there were still 18 per cent Percent RtMOVtO — fr \ r / 1 Si4- 1 i 1, / / / -+—f SI 11 i 1 r r // J if t #- -/—f / ( 1/ —? s / / / A 0 ■J. / w— * it rf 4 /o< vY/ 7 < * -f/ 0? 7 A / ,y/j u It V */ / / 1// f / / 1 t. t 3 * 5 e 7 B S IO II B B. 14 15 » 17 I ft 19 SO Si £2 Si SA 25 YtARS. Fig. 19.—Diagram showing length of life of ties on the K. Ferd. Xorth. Railway. Austria. in service after twenty-live years. It is true that these ties were instation yards, but that detracts litt
. The decay of timber and methods of preventing it . ted on an aver-age twenty years, and probably more, as there were still 18 per cent Percent RtMOVtO — fr \ r / 1 Si4- 1 i 1, / / / -+—f SI 11 i 1 r r // J if t #- -/—f / ( 1/ —? s / / / A 0 ■J. / w— * it rf 4 /o< vY/ 7 < * -f/ 0? 7 A / ,y/j u It V */ / / 1// f / / 1 t. t 3 * 5 e 7 B S IO II B B. 14 15 » 17 I ft 19 SO Si £2 Si SA 25 YtARS. Fig. 19.—Diagram showing length of life of ties on the K. Ferd. Xorth. Railway. Austria. in service after twenty-live years. It is true that these ties were instation yards, but that detracts little from the general results, so faras the matter of decay is concerned. Turning to the oak ties, we note a rather surprising state of will be seen that the un impregnated oak ties lasted on an averageas long as those impregnated with zinc chloride or tar oil, while thoseimpregnated with tar oil came out before those treated with zinc Bui. 14, Bure PLATE V i- ;
Size: 2267px × 1102px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectagricul, bookyear1902
